The Riddle of the Black Unicorn

In Paris’s La Villette district, a young seamstress wearing a velvet mask is murdered, with a black unicorn medallion found beside her body. Soon after, two affluent men are also brutally killed, prompting Victor Legris to investigate a complex web of secrets connected to a fashionable dressmaking workshop and a clandestine society of the elite. As he delves deeper, he uncovers long-buried secrets that many are determined to keep hidden, risking danger at every turn.